Micronutrient Deficiencies After Roux-en-Y Gastric Bypass: Long-Term Results

ConclusionsVitamin D deficiency remains the most common preoperative deficiency. Anemia and deficiencies of iron and vitamin B12 are common before and after surgery. Deficiencies of calcium, magnesium, folate, and vitamins A, B1, and B6 are markedly low in the postoperative period.
Source: Obesity Surgery - Category: Surgery Source Type: research